Detection Of Speed By Measuring The Time Interval - IFM Electronic ecomot200 DY 340 Betriebsanleitung

8. 4. Detection of speed by measuring the time interval

The speed is calculated from the time interval between the "start" pulse and the
"stop" pulse.
stop pulse
start pulse
1. Select the time basis which corresponds to the approx. time interval from the fol-
lowing table. Set the parameter P01 to the corresponding value.
time base
0.01s
0.10s
1.00s
10.00s
2. Calculate the operand to determine the display.
O = s ÷ t
d = measured distance in m, km (depending on the requested display);
t = selected elapsed time in s, min, h (depending on the requested display).
3. Set the parameter P02 to this value (enter the numerical value without decimal
place).
4. If needed, set the decimal point with the parameter 07.
Examples:
measured distance (s)
10m
0.5m
A
DY 340
B
C
value for parameter P01
7
8
9
10
time base (t)
1s
0.01s
start
measured distance
operand (O)
10
(display in m/s)
0.5
(display in m/s)
×
50 3600
(display in km/h)
stop
÷
1 = 10
÷
0.01 = 50
÷
1000 = 180
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